Question

A stone falling from the roof of a building is an example of:

• A. frictional force
• B. magnetic force
• C. gravitational force
• D. electrostatic force

Answer 1

The correct option is C

gravitational force

The explanation for the correct option:

Option (C):

1. The force of attraction that acts between a huge body and a small body is called the force of gravity or gravitational force.
2. The gravitational force is a non-contact force.
3. It acts between two bodies possessing mass.
4. A stone dropped from a height comes to the earth due to the force of gravity which is the gravitational force.

The explanation for the incorrect option:

Option (A):

1. A frictional force acts between the surface of two bodies that are in contact with each other.
2. It opposes the motion of one body over the surface of another.

Option (B):

1. A magnet is a substance that attracts things made up of iron, cobalt, and nickel.
2. The force that a magnet exerts on substances made of iron is called magnetic force.

Option (D):

1. Electrostatic force is also a non-contact force.
2. It is exerted by a body that is electrified.

Thus option (C) is the correct option.